IT System and Network Administrator

We are seeking an experienced System and Network Administrator to support and maintain a reliable enterprise network in Peoria, Arizona. This IT position is ideal for someone who is detail-oriented and can manage core infrastructure, strengthen network security, and ensure stable connectivity across business operations. The role requires hands-on expertise with Cisco networking equipment, firewall platforms, Microsoft Windows Servers, and Active Directory in a fast-paced technical setting.

ESSENTIAL DUTIES AND RESPONSIBILITIES:

Provide training and guidance on infrastructure solutions and related topics to internal IT staff and end users Designs, analyzes, maintains, and implements LAN/WAN equipment, network, and telephony infrastructure, including maintenance of security measures and solutions Administer and maintain network infrastructure, including Cisco routers, switching environments, and LAN connectivity to support daily operations Administer virtualization solutions, such as VMware ESXi and Microsoft Hyper-V Support Active Directory, Group Policy, DNS, DHCP, and identity management systems Monitor network performance, identify connectivity issues, and resolve disruptions to maintain consistent system availability Configure, manage, and optimize firewall technologies to protect systems and enforce network security standards Troubleshoot hardware, software, and communication issues across the network and implement timely corrective actions Perform network updates, configuration changes, and infrastructure improvements while minimizing operational downtime Working knowledge of Windows, Linux Servers, Office 365, Active Directory administration, and access management Strong hands-on knowledge of Cisco routers, Cisco networking, and LAN environments Familiarity with network documentation, maintenance processes, and operational best practices Support Multiple sites network infrastructure Provide Level 2 IT support, troubleshooting system and user issues Qualifications POSITION QUALIFICATIONS/ FUNCTIONAL SKILLS/ COMPETENCIES:

EXPERIENCE/EDUCATION:

5 or more years of experience as a network administrator Minimum of 3 years operational experience as a system administrator Extensive operational experience with IPsec VPN tunnel provisioning across multiple platforms. Strong understanding of networking concepts (TCP/IP, VLANs, VPNs, firewalls). Demonstrated ability to adapt quickly to changing priorities and procedures in a dynamic manufacturing environment Strong understanding of cybersecurity protocols Experience with DoD DFARS, NIST, and CMMC cybersecurity practice standards a plus. Ability to work in a fast-paced environment and be a team player with a proactive and adaptable approach Excellent communication and organizational skills Preferred Certifications: Cisco CCNA or Microsoft CompTIA Bachelor's degree in Computer Science or IT Certifications Must be at least 18 years or older Required Skills Strong understanding of networking concepts (TCP/IP, VLANs, VPNs, firewalls). Strong understanding of cybersecurity protocols Working knowledge of Windows, Linux Servers, Office 365, Active Directory administration, and access management Strong hands-on knowledge of Cisco routers, Cisco networking, and LAN environments Familiarity with network documentation, maintenance processes, and operational best practices Demonstrated ability to adapt quickly to changing priorities and procedures in a dynamic manufacturing environment Ability to work in a fast-paced environment and be a team player with a proactive and adaptable approach Excellent communication and organizational skills Preferred Skills Experience with DoD DFARS, NIST, and CMMC cybersecurity practice standards a plus. Preferred Certifications: Cisco CCNA or Microsoft CompTIA

JOB FACTORS/WORK ENVIRONMENT:

This role operates in a professional office environment within a high-activity manufacturing facility. It requires a balance between desktop IT operations and active, on-site operational oversight is required. Possible Travel to other TYR Sites. This job description is not intended to be an exhaustive list of all duties or responsibilities associated with the job. Other job-related duties may be assigned. Equal Opportunity Statement An Aff… Employer Drug-Free Working Environment #J-18808-Ljbffr TYR Tactical